Red Handfish are one of the rarest fish in the world, with only about one hundred individuals left in the wild, living on two tiny reefs in south ast Tasmania.This summer, as a marine heatwave bore down on these critically endangered fish, scientists leapt into action to prevent the species' extinction, taking 25 Red Handfish out of the sea and caring for them on land until waters cooled.Now, they've been able to release nearly all of them back into the wild. We're joined by Dr Andrew Trotter from the Institute for Marine and Antarctic Studies at the University of Tasmania to learn about this extraordinary effort.Image: John Turnbull/Flickr.